Forecast Details for Grand Rapids, MI

Recent Locations: Parlier, CA Cairo, NY Grand Rapids, MI

Today: Cloudy, with a high near 48. East northeast wind 8 to 13 mph.

Tonight: A 40 percent chance of showers, mainly after 3am. Mostly cloudy, with a low around 35. East wind around 14 mph, with gusts as high as 28 mph.

Thursday: Showers and possibly a thunderstorm. High near 69. East wind 13 to 15 mph, with gusts as high as 30 mph. Chance of precipitation is 100%. New rainfall amounts between a quarter and half of an inch possible.

Thursday Night: Showers and possibly a thunderstorm before 2am, then a chance of showers and thunderstorms after 2am. Low around 52. Southwest wind 15 to 17 mph, with gusts as high as 37 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.

Friday: A chance of showers before 8am, then a slight chance of showers after 2pm. Mostly sunny, with a high near 64. West wind 8 to 10 mph, with gusts as high as 23 mph. Chance of precipitation is 30%.

Friday Night: A chance of showers before 11pm, then a chance of showers and thunderstorms between 11pm and 2am, then showers and possibly a thunderstorm after 2am. Low around 51. Chance of precipitation is 90%.

Saturday: Showers. High near 65. Chance of precipitation is 90%.

Saturday Night: Showers likely, mainly before 8pm. Mostly cloudy, with a low around 36.

Sunday: Mostly cloudy, with a high near 43. Breezy.

Sunday Night: Mostly clear, with a low around 29.

Monday: A chance of showers. Partly sunny, with a high near 49.

Monday Night: A chance of rain and snow showers. Mostly cloudy, with a low around 31.

Tuesday: A chance of snow showers. Partly sunny, with a high near 47.

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Current U.S. National Radar--Current

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National Weather Forecast--Current

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National Weather Forecast for Tomorrow

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North America Water Vapor (Moisture)

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Weather Topic: What are Contrails?

Home - Education - Cloud Types - Contrails

Next Topic: Cumulonimbus Clouds

A contrail is an artificial cloud, created by the passing of an aircraft.

Contrails form because water vapor in the exhaust of aircraft engines is suspended in the air under certain temperatures and humidity conditions. These contrails are called exhaust contrails.

Another type of contrail can form due to a temporary reduction in air pressure moving over the plane's surface, causing condensation. These are called aerodynamic contrails.

When you can see your breath on a cold day, it is also because of condensation. The reason contrails last longer than the condensation from your breath is because the water in contrails freezes into ice particles.

Next Topic: Cumulonimbus Clouds

Weather Topic: What are Cumulus Clouds?

Home - Education - Cloud Types - Cumulus Clouds

Next Topic: Drizzle

Cumulus clouds are fluffy and textured with rounded tops, and may have flat bottoms. The border of a cumulus cloud is clearly defined, and can have the appearance of cotton or cauliflower.

Cumulus clouds form at low altitudes (rarely above 2 km) but can grow very tall, becoming cumulus congestus and possibly the even taller cumulonimbus clouds. When cumulus clouds become taller, they have a greater chance of producing precipitation.

Next Topic: Drizzle